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  1. #11
    RCdiy RCdiy's Avatar
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    Keep in mind most of the time the limitation is the 8 channel receiver (8 sets of servo pins).
    TAER take up 4 channels.
    That leaves 4 channels for switches and the potentiometers. Maybe plus 2 channels for gyro/flight controller control.
    So 6 switches and 2 potentiometers for most people would be enough.
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  2. #12
    RCdiy RCdiy's Avatar
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    Quote Originally Posted by Pilot_35 View Post
    With the 9xd special with the unscrewedable anntana I heard you don't want to keep putting it on and off or the connection will get bad is this true if so could you modify the case that it comes in. to fit the 9xd with the anntana on?
    Thanks
    Leave it on and don't unscrew it.
    If you are a handy DIYer then sure you could make it a fixed antenna.
    My suggestion is that when you get it use it for one full flying season before you start with the mods. The FrSKY transmitters are quite good as is without DIY type modifications.
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  3. #13

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    Quote Originally Posted by RCdiy View Post
    Keep in mind most of the time the limitation is the 8 channel receiver (8 sets of servo pins).
    ...
    While it is true that FrSky only sells 8 PWM channel RX, the X-Series RX do support 16 channels, either through S-Bus which can be decoded or by adding a second RX with special binding procedure to bind the second RX to channels 9 to 16. So, with no change to the TX nor JR module, both Q X7 and X9D can transmit 16 channels.

  4. #14
    RCdiy RCdiy's Avatar
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    With respect to number of channels. Are you into adding gadgets or do you just want to fly without the peripheral distractions/fun?

    12 servo channels
    An x8R receiver can have an additional 4 channel added using the sbus to pwm coverter.

    16 channels
    You can also bind two receivers to the same radio on the same aircraft (but make sure teleletry is turned off on the second receiver).

    16+ channels

    To go above 16 channels you need to add an external module.
    Post getting to long and off topic (a bit) so if you want to know more start a new thread and we'll jump in.

    How many channels are needed/wanted

    4 channels TAER
    2 Gyro/flight controller S6R/S8R
    1 differential throttle for twin engine
    2 Flaps (depending on how the servos and link arms are mounted)
    --------
    9 channels

    1 Gear
    1+ for lights
    1 smoke
    1 candy dropper
    1-2 bombs
    Keep adding
    Last edited by RCdiy; 11-15-2017 at 02:16 PM.
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  5. #15
    RCdiy RCdiy's Avatar
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    http://rcdiy.ca/opentx-guide/opentx-...el-setup/#Bind

    Quote Originally Posted by bitogre View Post
    While it is true that FrSky only sells 8 PWM channel RX, the X-Series RX do support 16 channels, either through S-Bus which can be decoded or by adding a second RX with special binding procedure to bind the second RX to channels 9 to 16. So, with no change to the TX nor JR module, both Q X7 and X9D can transmit 16 channels.
    RCdiy.ca
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  6. #16

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    Quote Originally Posted by RCdiy View Post
    With respect to number of channels. Are you into adding gadgets or do you just want to fly without the peripheral distractions/fun?
    Very true. It is rare and questionable if you ever need more than 8 channels. In fact, very few cases would that be wise.

    Quote Originally Posted by RCdiy View Post
    12 servo channels
    An x8R receiver can have an additional 4 channel added using the sbus to pwm coverter.
    BTW, you can have multiple sbus to pwm coverters Y off the S-Bus output so you can get the full 16 with the X8R and 2 converters.

    Quote Originally Posted by RCdiy View Post
    16-24 servo channels
    You can also bind two receivers to the same radio on the same aircraft (but make sure teleletry is turned on on the second receiver).
    How are you getting to 24 channels? To my knowledge, the protocol does not support that without adding a JR module (in which case, you can get to 32). If you are thinking (X8R + converter) time 2 that does not get you 24 unique channels as the converters would be outputting duplicates of X8R outputs.

    But you do have a good point that when binding the second X8R, be sure to use the binding procedure to have it on 9-16 and telemetry is off: only one RX can provide telemetry.

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